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breech presentation (feet or buttocks-first birth); breech delivery; breech birth
逆子と分かり帝王切開になった。
A breech presentation was found, leading to a C-section.
逆子を直す体操を教わった。
I was taught exercises to correct a breech position.
逆子のまま出産する例もある。
There are cases of delivering in breech position.